Tensor-Product Preconditioners for a Space-Time Discontinuous Galerkin Method

被引：0
|
作者：
Diosady, Laslo T. [1 ]
Murman, Scott M. [1 ]
机构：
[1] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
来源：
INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2014 (ICCMSE 2014) | 2014年 / 1618卷
关键词：
Discontinuous Galerkin Methods; Space-Time Formulations; Spectral Element Methods; NAVIER-STOKES EQUATIONS;
D O I：
10.1063/1.4897889
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A space-time discontinuous Galerkin spectral element discretization is presented for direct numerical simulation of the compressible Navier-Stokes equations. An efficient solution technique based on a matrix-free Newton-Krylov method is presented. A diagonalized alternating direction implicit preconditioner is extended to a space-time formulation using entropy variables. The effectiveness of this technique is demonstrated for the direct numerical simulation of turbulent flow in a channel.
引用
收藏
页码：946 / 949
页数：4
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